A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6110-01-448-7791
NSN 5855-01-590-4576
NSN 5975-01-378-7762
NSN 5996-01-650-5762
NSN 5925-00-617-9927
NSN 6130-00-525-3246
NSN 5985-00-897-1692
NSN 5950-01-432-0242
NSN 5985-01-159-1603
NSN 6645-01-323-1956
NSN 5895-01-200-6925
NSN 6650-01-428-2251